package d1111.r214.num07;

public class Demo02 {
    public static void main(String[] args){
        Student stu=new Student("张三","21401");
        //System.out.println(stu.hashCode());
        System.out.println(stu);
        System.out.println(stu.toString());

        String name="haha";
        System.out.println(name);
        System.out.println(name.toString());
    }
}
